VDB-122285 · CVE-2017-2650 · BID 96981

Pipeline: Classpath Step Plugin on Jenkins Sandbox 7pk security

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Pipeline: Classpath Step Plugin on Jenkins. This impacts an unknown function of the component Sandbox. The manipulation leads to 7pk security. This vulnerability is referenced as CVE-2017-2650. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Pipeline: Classpath Step Plugin on Jenkins (Jenkins Plugin) (affected version not known). This issue affects some unknown functionality of the component Sandbox. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

It was found that the use of Pipeline: Classpath Step Jenkins plugin enables a bypass of the Script Security sandbox for users with SCM commit access, as well as users with e.g. Job/Configure permission in Jenkins.

The bug was discovered 03/20/2017. The weakness was published 07/27/2018 by Jesse Glick with CloudBees, Inc. (Website). The advisory is shared at jenkins.io. The identification of this vulnerability is CVE-2017-2650 since 11/30/2016. The attack may be initiated remotely. A simple authentication is required for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1211 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 494 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 96981†). Similar entries are available at VDB-122284 and VDB-122287. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Jenkins Plugin

Name

Pipeline: Classpath Step Plugin

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.0
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/30/2016 🔍
03/20/2017 +109 days 🔍
03/21/2017 +1 days 🔍
07/27/2018 +492 days 🔍
07/27/2018 +0 days 🔍
07/28/2018 +1 days 🔍
03/10/2020 +591 days 🔍

Sourcesinfo

Advisory: jenkins.io
Researcher: Jesse Glick
Organization: CloudBees, Inc.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-2650 (🔍)
GCVE (CVE): GCVE-0-2017-2650
GCVE (VulDB): GCVE-100-122285
SecurityFocus: 96981 - Jenkins CVE-2017-2650 Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 07/28/2018 07:39
Updated: 03/10/2020 21:39
Changes: 07/28/2018 07:39 (59), 03/10/2020 21:39 (6)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.